Reversing turbine



W. B. FLANDERS. 'REVEBSING TURBINE. APPLICATION FILED JUNE 22, 1920.

L416,702. Patented May 23,1922.

INVENTOR A'ITORNEY WARREN B. FLANDERS, OF ESSINGTON, PENNSYLVANIA, ASSIGNOR TO ESTING- HOUSE ELECTRIC AND lr/IANUFACTURING COMPANY, A CORPORATION OF PENN- SYLVANIA.

BEVERSING TURBINE.

Specification of Letters Patent.

Patented litay 23, 19722.

Application filed June 22, 1920. Serial No. 390,907.

To all whom it may concern Be it known that I, l/VARREN B. FLANDERS, a citizen of the United States, and a' resident of Essington, in the county of Delaware and State of Pennsylvania, have invented a new and useful Improvement in Reversing Turbines, of which the following is a specification.

My invention relates to a steam turbine having forward and reverse blading sections and has for its object the provision of means whereby the steam for the one section is caused to pass through a jacket surrounding the other section for the purpose of cooling or limiting the attainable temperature thereof when in operation.

In the drawings the figure is a longitudinal sectional view of my turbine.

In the operation of marine turbines, trouble is experienced due to the overheating of the ahead section when the astern section is in operation. This is due to the fact that there is a churning of steam in the ahead section which causes the development of a high degree of friction which manifests itself as heat, and if no way is provided for dissipating this heat the blading of the ahead section is likely .to be injured. Accordingly, it is the purpose of my invention to provide means for dissipating the heat developed in the ahead section when it is running idle.

In the drawings, is shown a marine turbine having an ahead section 3 and an astern section 4. The ahead section and the astern section include the rotor and stator elements 5 and 6 supporting the blading. The ahead section is provided with blading 7 receiving steam from the inlet 8, and the steam, after expansion, is discharged into the chamber 10 and passes to a condenser (not shown).

The astern section includes rows of blades 12 and 13 carried by the rotor and a single row of stationary blades 14 carried by the stator interposed between the blades carried by the rotor. The stator also carries a series of nozzles 15 adapted to discharge steam into the first row of moving blades 13. Steam for the nozzles of the astern section enters through the inlet 16 of the jacket 17 surrounding the blading 7. The jacket is provided with a steam outlet 18 communicating with a conduit 19, and the latter discharges into a manifold or header 20 in communication with the nozzles 15.

bine in the reverse direction or aster-n, it is necessary that the steam for the reverse or astern blading pass through the jacket surrounding the blading of the ahead section. it will be obvious that the steam will pass through the jacket at a relatively high velocity, and should there be a tendency for the blading enclosed by the jacket to reach a temperature higher than that of the steam, there will be a transfer of heat from the stator and blading to the steam and thereby the steam will act as a cooler for the ahead blading and the immediate stator element to limit the attainable temperature of the latter.

Although, I have particularly described the jacket as surrounding the ahead section of a marine turbine, it will be obvious that the jacket might surround the astern blading. I do not desire to be limited to any particular section in the application of the jacket and it is to be understood either section of a reversible turbine might be jacketed so that the steam for the operative section may serve as a cooler or transfer agent for the heat developed in the idle section.

While I have shown my invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various other changes and modifications, without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed there upon as are imposed by the prior art or as are specifically set forth in the appended claims.

What I claim is 1. In an axial flow turbine, the combination of an ahead blading section, a reverse blading section, and a jacket surrounding one section and adapted to receive steam and discharge it into the other section.

2. In a turbine, the combination of an ahead blading section, a reverse blading section, a discharge chamber between the ahead and reverse blading sections, a jacket surrounding one section and having a steam inlet, a steam chamber adapted to supply steam to the other section, and a conduit between the jacket and the steam chamber.

3. In a marine turbine of the axial flow veloping power in another section Which consists in passing steam aroundthe idly-running section to abstract heat developed thereby When running idly and thereafter in using the steam in another turbine section wherein a portion of the heat energy of the steam is converted into mechanical Work.

In testimony whereof, I have hereunto subscribed my name this 16th day of June WARREN B. FLANDERS. 

